ADI_4_AUX

Instance: ADI_4_AUX
Component: ADI_4_AUX
Base address: 0x400CB000


Configuration registers controlling analog peripherals of AUX. Registers Fields should be considered static unless otherwise noted (as dynamic)

TOP:ADI_4_AUX Register Summary

Register Name

Type

Register Width (Bits)

Register Reset

Address Offset

Physical Address

MUX0

RW

8

0x00

0x0000 0000

0x400C B000

MUX1

RW

8

0x00

0x0000 0001

0x400C B001

MUX2

RW

8

0x00

0x0000 0002

0x400C B002

MUX3

RW

8

0x00

0x0000 0003

0x400C B003

ISRC

RW

8

0x00

0x0000 0004

0x400C B004

COMP

RW

8

0x00

0x0000 0005

0x400C B005

MUX4

RW

8

0x00

0x0000 0007

0x400C B007

ADC0

RW

8

0x00

0x0000 0008

0x400C B008

ADC1

RW

8

0x00

0x0000 0009

0x400C B009

ADCREF0

RW

8

0x00

0x0000 000A

0x400C B00A

ADCREF1

RW

8

0x00

0x0000 000B

0x400C B00B

LPMBIAS

RW

8

0x00

0x0000 000E

0x400C B00E

TOP:ADI_4_AUX Register Descriptions

TOP:ADI_4_AUX:MUX0

Address Offset 0x0000 0000
Physical Address 0x400C B000 Instance 0x400C B000
Description Internal. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7 RESERVED7 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0
6 ADCCOMPB_IN Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 VDDR_1P8V Internal. Only to be used through TI provided API.
RW 0
5:4 RESERVED4 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0b00
3:0 COMPA_REF Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 DCOUPL Internal. Only to be used through TI provided API.
0x2 VSS Internal. Only to be used through TI provided API.
0x4 VDDS Internal. Only to be used through TI provided API.
0x8 ADCVREFP Internal. Only to be used through TI provided API.
RW 0x0

TOP:ADI_4_AUX:MUX1

Address Offset 0x0000 0001
Physical Address 0x400C B001 Instance 0x400C B001
Description Internal. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:0 COMPA_IN Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 AUXIO26 Internal. Only to be used through TI provided API.
0x2 AUXIO25 Internal. Only to be used through TI provided API.
0x4 AUXIO24 Internal. Only to be used through TI provided API.
0x8 AUXIO23 Internal. Only to be used through TI provided API.
0x10 AUXIO22 Internal. Only to be used through TI provided API.
0x20 AUXIO21 Internal. Only to be used through TI provided API.
0x40 AUXIO20 Internal. Only to be used through TI provided API.
0x80 AUXIO19 Internal. Only to be used through TI provided API.
RW 0x00

TOP:ADI_4_AUX:MUX2

Address Offset 0x0000 0002
Physical Address 0x400C B002 Instance 0x400C B002
Description Internal. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:3 ADCCOMPB_IN Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 ATEST0 Internal. Only to be used through TI provided API.
0x2 ATEST1 Internal. Only to be used through TI provided API.
0x4 DCOUPL Internal. Only to be used through TI provided API.
0x8 VSS Internal. Only to be used through TI provided API.
0x10 VDDS Internal. Only to be used through TI provided API.
RW 0b0 0000
2:0 DAC_VREF_SEL Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 DCOUPL Internal. Only to be used through TI provided API.
0x2 ADCREF Internal. Only to be used through TI provided API.
0x4 VDDS Internal. Only to be used through TI provided API.
RW 0b000

TOP:ADI_4_AUX:MUX3

Address Offset 0x0000 0003
Physical Address 0x400C B003 Instance 0x400C B003
Description Internal. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:0 ADCCOMPB_IN Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 AUXIO26 Internal. Only to be used through TI provided API.
0x2 AUXIO25 Internal. Only to be used through TI provided API.
0x4 AUXIO24 Internal. Only to be used through TI provided API.
0x8 AUXIO23 Internal. Only to be used through TI provided API.
0x10 AUXIO22 Internal. Only to be used through TI provided API.
0x20 AUXIO21 Internal. Only to be used through TI provided API.
0x40 AUXIO20 Internal. Only to be used through TI provided API.
0x80 AUXIO19 Internal. Only to be used through TI provided API.
RW 0x00

TOP:ADI_4_AUX:ISRC

Address Offset 0x0000 0004
Physical Address 0x400C B004 Instance 0x400C B004
Description Current Source

Strength and trim control for current source. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:2 TRIM Adjust current from current source.

Output currents may be combined to get desired total current.
Value ENUM Name Description
0x0 NC No current connected
0x1 0P25U 0.25 uA
0x2 0P5U 0.5 uA
0x4 1P0U 1.0 uA
0x8 2P0U 2.0 uA
0x10 4P5U 4.5 uA
0x20 11P75U 11.75 uA
RW 0b00 0000
1 RESERVED1 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0
0 EN Current source enable RW 0

TOP:ADI_4_AUX:COMP

Address Offset 0x0000 0005
Physical Address 0x400C B005 Instance 0x400C B005
Description Comparator

Control COMPA and COMPB comparators. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7 COMPA_REF_RES_EN Enables 400kohm resistance from COMPA reference node to ground. Used with COMPA_REF_CURR_EN to generate voltage reference for cap-sense. RW 0
6 COMPA_REF_CURR_EN Enables 2uA IPTAT current from ISRC to COMPA reference node. Requires ISRC.EN = 1. Used with COMPA_REF_RES_EN to generate voltage reference for cap-sense. RW 0
5:3 LPM_BIAS_WIDTH_TRIM Internal. Only to be used through TI provided API. RW 0b000
2 COMPB_EN COMPB enable RW 0
1 RESERVED1 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0
0 COMPA_EN COMPA enable RW 0

TOP:ADI_4_AUX:MUX4

Address Offset 0x0000 0007
Physical Address 0x400C B007 Instance 0x400C B007
Description Internal. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:0 COMPA_REF Internal. Only to be used through TI provided API.
Value ENUM Name Description
0x0 NC Internal. Only to be used through TI provided API.
0x1 AUXIO26 Internal. Only to be used through TI provided API.
0x2 AUXIO25 Internal. Only to be used through TI provided API.
0x4 AUXIO24 Internal. Only to be used through TI provided API.
0x8 AUXIO23 Internal. Only to be used through TI provided API.
0x10 AUXIO22 Internal. Only to be used through TI provided API.
0x20 AUXIO21 Internal. Only to be used through TI provided API.
0x40 AUXIO20 Internal. Only to be used through TI provided API.
0x80 AUXIO19 Internal. Only to be used through TI provided API.
RW 0x00

TOP:ADI_4_AUX:ADC0

Address Offset 0x0000 0008
Physical Address 0x400C B008 Instance 0x400C B008
Description ADC Control 0

ADC Sample Control. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7 SMPL_MODE ADC Sampling mode:

0: Synchronous mode
1: Asynchronous mode

The ADC does a sample-and-hold before conversion. In synchronous mode the sampling starts when the ADC clock detects a rising edge on the trigger signal. Jitter/uncertainty will be inferred in the detection if the trigger signal originates from a domain that is asynchronous to the ADC clock. SMPL_CYCLE_EXP determines the the duration of sampling.
Conversion starts immediately after sampling ends.

In asynchronous mode the sampling is continuous when enabled. Sampling ends and conversion starts immediately with the rising edge of the trigger signal. Sampling restarts when the conversion has finished.
Asynchronous mode is useful when it is important to avoid jitter in the sampling instant of an externally driven signal		 RW 0
6:3 SMPL_CYCLE_EXP Controls the sampling duration before conversion when the ADC is operated in synchronous mode (SMPL_MODE = 0). The setting has no effect in asynchronous mode. The sampling duration is given as 2^(SMPL_CYCLE_EXP + 1) / 6 us.
Value ENUM Name Description
0x3 2P7_US 16x 6 MHz clock periods = 2.7us
0x4 5P3_US 32x 6 MHz clock periods = 5.3us
0x5 10P6_US 64x 6 MHz clock periods = 10.6us
0x6 21P3_US 128x 6 MHz clock periods = 21.3us
0x7 42P6_US 256x 6 MHz clock periods = 42.6us
0x8 85P3_US 512x 6 MHz clock periods = 85.3us
0x9 170_US 1024x 6 MHz clock periods = 170us
0xA 341_US 2048x 6 MHz clock periods = 341us
0xB 682_US 4096x 6 MHz clock periods = 682us
0xC 1P37_MS 8192x 6 MHz clock periods = 1.37ms
0xD 2P73_MS 16384x 6 MHz clock periods = 2.73ms
0xE 5P46_MS 32768x 6 MHz clock periods = 5.46ms
0xF 10P9_MS 65536x 6 MHz clock periods = 10.9ms
RW 0x0
2 RESERVED2 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0
1 RESET_N Reset ADC digital subchip, active low. ADC must be reset every time it is reconfigured.

0: Reset
1: Normal operation		 RW 0
0 EN ADC Enable

0: Disable
1: Enable		 RW 0

TOP:ADI_4_AUX:ADC1

Address Offset 0x0000 0009
Physical Address 0x400C B009 Instance 0x400C B009
Description ADC Control 1

ADC Comparator Control. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:1 RESERVED1 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0b000 0000
0 SCALE_DIS Internal. Only to be used through TI provided API. RW 0

TOP:ADI_4_AUX:ADCREF0

Address Offset 0x0000 000A
Physical Address 0x400C B00A Instance 0x400C B00A
Description ADC Reference 0

Control reference used by the ADC. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7 SPARE7 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0
6 REF_ON_IDLE Enable ADCREF in IDLE state.

0: Disabled in IDLE state
1: Enabled in IDLE state

Keep ADCREF enabled when ADC0.SMPL_MODE = 0.
Recommendation: Enable ADCREF always when ADC0.SMPL_CYCLE_EXP is less than 0x6 (21.3us sampling time).		 RW 0
5 IOMUX Internal. Only to be used through TI provided API. RW 0
4 EXT Internal. Only to be used through TI provided API. RW 0
3 SRC ADC reference source:

0: Fixed reference = 4.3V
1: Relative reference = VDDS		 RW 0
2:1 RESERVED1 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0b00
0 EN ADC reference module enable:

0: ADC reference module powered down
1: ADC reference module enabled		 RW 0

TOP:ADI_4_AUX:ADCREF1

Address Offset 0x0000 000B
Physical Address 0x400C B00B Instance 0x400C B00B
Description ADC Reference 1

Control reference used by the ADC. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:6 RESERVED6 Software should not rely on the value of a reserved. Writing any other value than the reset value may result in undefined behavior. RW 0b00
5:0 VTRIM Trim output voltage of ADC fixed reference (64 steps, 2's complement). Applies only for ADCREF0.SRC = 0.

Examples:
0x00 - nominal voltage 1.43V
0x01 - nominal + 0.4% 1.435V
0x3F - nominal - 0.4% 1.425V
0x1F - maximum voltage 1.6V
0x20 - minimum voltage 1.3V		 RW 0b00 0000

TOP:ADI_4_AUX:LPMBIAS

Address Offset 0x0000 000E
Physical Address 0x400C B00E Instance 0x400C B00E
Description Internal. Only to be used through TI provided API.
Type RW
Bits Field Name Description Type Reset
7:6 SPARE6 Internal. Only to be used through TI provided API. RW 0b00
5:0 LPM_TRIM_IOUT Internal. Only to be used through TI provided API. RW 0b00 0000


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